This is the Woodland Scenics 33"x 50" ReadyGrass "Green" Vinyl Mat. ReadyGrass Mats are high-quality grass mats that are great to use as is or mounted on plywood. They can be used for model railroading, school projects, arts and crafts, gaming, military dioramas, architectural models, collectible houses, slot cars and much more. With these unique mats you can form mountains, valleys and create water areas. You can also add roads, sidewalks and parking lots.